WidgetVisibilityChecker class
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- WidgetVisibilityChecker
- Available extensions
Constructors
- WidgetVisibilityChecker({Key? key, required Widget child, required Axis childScrollDirection, double mainAxisStartingEdgeDeflateRatio = 0.0, double mainAxisEndingEdgeDeflateRatio = 0.0, double crossAxisStartingEdgeDeflateRatio = 0.0, double crossAxisEndingEdgeDeflateRatio = 0.0, bool drawDebugOverlay = false, int defaultThrottleTime = 500, Color? offScreenColor, bool enableAdvancedScrollDetectionMethod = false, required VisibilityChangeHandler handler})
-
const
Properties
- child → Widget
-
final
- childScrollDirection → Axis
-
final
- crossAxisEndingEdgeDeflateRatio → double
-
final
- crossAxisStartingEdgeDeflateRatio → double
-
final
- defaultThrottleTime → int
-
final
- drawDebugOverlay → bool
-
final
- enableAdvancedScrollDetectionMethod → bool
-
Enable it to detect scroll events initiated by the scrollbar thumb when dragged by the user.
Enabling This, slightly decrease performance
final
- handler → VisibilityChangeHandler
-
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- ignorePointer → bool
-
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- mainAxisEndingEdgeDeflateRatio → double
-
final
- mainAxisStartingEdgeDeflateRatio → double
-
final
- offScreenColor → Color?
-
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< WidgetVisibilityChecker> -
Creates the mutable state for this widget at a given location in the tree.
override
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String -
Returns a string representation of this node and its descendants.
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object.
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
-
watchVisibility(
VisibilityChangeHandler handler) → void -
Available on Widget, provided by the CheckWidgetVisibilityExtension extension
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
inspectKey(
VisibilityKey< State< key) → voidStatefulWidget> > -
isKeyInspected(
VisibilityKey< State< key) → boolStatefulWidget> > -
unwatch(
BuildContext context, bool alsoRemoveKeyFromCollection) → void -
unwatchAll(
BuildContext context, bool alsoRemoveKeyFromCollection) → void -
watch(
BuildContext context) → WidgetVisibilityCheckerState